🏷️ Basic Information Identification Make: Vauxhall/Opel Model: Manta / Ascona Model Generation: Likely relates to the Manta B and Ascona B generations (1975-1988 for Manta B, 1975-1981 for Ascona B). Engine Variant: 1900 / 1.9 Litre Codes Wiring Harness Type: Universal EZ20 👋 Introduction Market Position Target Audience: Enthusiasts, DIY mechanics, and auto electricians working on classic Vauxhall/Opel Manta and Ascona models, particularly those retrofitting or repairing electrical systems with a universal harness. Competitive Analysis Uniqueness: Specialized focus on the EZ20 universal harness integration, which is a key differentiator for restoration or modification projects. Key Features Diagnostic Aid: Crucial tool for troubleshooting complex electrical gremlins common in older vehicles. Restoration Resource: Essential for accurate and reliable electrical system restoration or upgrades. Customization Support: Facilitates understanding of how to modify or extend wiring for custom setups. 📋 Manual Details Coverage Areas Primary Focus: Electrical system wiring diagrams. Secondary Focus: Integration of Universal EZ20 wiring harness, electrical troubleshooting. Page Count Estimated Pages: N/A (Detailed page count not provided in product information, but expected to be substantial for wiring diagrams). Manual Type Type: Wiring Diagram Manual / Electrical Service Manual. Language Language: Likely English (common for such manuals). Format Format: Digital (PDF implied by 'diagram manual' often sold digitally). 📖 Manual Coverage Systems Covered Electrical Lighting: Headlights, taillights, brake lights, turn signals, interior lighting, hazard lights. Electrical Ignition: Ignition system components, coil, distributor (if applicable), spark plugs, wiring. Electrical Starting: Starter motor, solenoid, battery connections, ignition switch wiring. Electrical Charging: Alternator, voltage regulator, battery charging circuit. Electrical Gauges Instruments: Speedometer, tachometer, fuel gauge, temperature gauge, oil pressure gauge, warning lights. Electrical Wiper Washer: Wiper motor, washer pump, switches, relays. Electrical HVAC: Heater blower motor, controls, associated wiring. Electrical Audio Accessories: Radio wiring, speaker connections, cigarette lighter/power outlets. Electrical Engine Management: Wiring for basic engine sensors (e.g., oil pressure, temperature) and actuators, as relevant for the 1.9L engine era. Procedures Included Troubleshooting Methods: Systematic diagnosis of electrical faults using wiring diagrams. Component Identification: Location and function of electrical components and their wiring connections. Wiring Diagram Interpretation: Understanding of schematic symbols, wire colors, and circuit routing. Harness Installation Guidance: Specifics on integrating the Universal EZ20 wiring harness into the vehicle's existing electrical architecture. Technical Depth Depth: Detailed electrical circuit schematics and component layouts. Diagnostic Level: Intermediate to advanced, suitable for identifying and resolving electrical issues, especially those related to a custom/universal harness. 📊 Manual Specifications File Format Digital Format: PDF (Portable Document Format) is standard and highly probable. Searchability: Likely searchable text, enabling quick navigation to specific components or circuits. Print Quality Printability: Designed for clear reproduction in print for workshop use. Binding Type Physical Binding: N/A (Digital format, but if printed would likely be spiral-bound for lay-flat use). Paper Type Physical Paper: N/A (Digital format, but original manuals used durable paper stock). ⚙️ Engine Specifications Primary Engine Engine Family: Opel CIH (Cam-in-Head) engine family. Engine Displacement Litres: 1.9 Litres (1897 cc). Engine Bore X Stroke: Approx. 92.0 mm x 70.0 mm (common for 1.9L CIH). Engine Code Examples: e.g., 19S, 19N, 19SR (specific to tuning/variant). Performance Horsepower Range Approx: Typically 75-90 PS (DIN) for standard versions, potentially higher for sportier variants like SR. Torque Range Approx: Around 140-160 Nm (DIN) for standard versions. Fuel System Fuel Delivery: Typically carbureted (e.g., Solex, Weber) for most 1.9L variants. Fuel Type: Unleaded gasoline (petrol). Engine Layout Configuration: Inline 4-cylinder. Drive Type: Rear-wheel drive (RWD). 🔧 Transmission Standard Transmission Type Std: 4-speed manual transmission. Optional Transmission Type Opt: 3-speed automatic transmission (e.g., GM TH180). Features Clutch Type: Single dry plate, hydraulically actuated. 📐 Dimensions Exterior Body Styles: Manta B: Coupe (2-door), Ascona B: Sedan (4-door), Hatchback (3-door, known as 'CC'). Wheelbase Mm: Approx. 2500-2600 mm (varies slightly by model/generation). Weights Curb Weight Kg Approx: 1000-1150 kg (depending on body style and equipment). 🛡️ Safety Features Ratings Era Safety Standards: Reflects 1970s/early 1980s safety standards, typically lacking modern crumple zones, airbags, or advanced ABS. Active Features Braking System: Front disc brakes, rear drum brakes. Power assistance often standard. Passive Features Seatbelts: Front seatbelts (lap and diagonal), rear lap belts. Construction: Unitary body construction (monocoque). 💡 Technology Features Infotainment Audio System: Basic AM/FM radio or stereo cassette player, often with two speakers. Driver Assistance Features: Minimal driver assistance systems; focus on basic driving controls. Connectivity Features: No modern connectivity features like Bluetooth or USB. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000-7,500 miles (8,000-12,000 km) or 6-12 months, depending on usage and oil type. Spark Plug Replacement: Around 15,000-20,000 miles (24,000-32,000 km). Fluid Specifications Engine Oil Type: API SG/SF or higher, viscosity typically 10W-40 or 20W-50 depending on climate. Refer to specific engine variant for precise recommendations. Coolant Type: Ethylene glycol based antifreeze/coolant, mixed with distilled water (typically 50/50 ratio). Transmission Fluid Manual: GL-4 gear oil, typically 80W-90...